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Stars acquire youth through duplicity


The origin of unusually hot stars in a sparse cluster has been attributed to their being members of binary systems rather than stellar collisions. This prompts a rethink of how stars merge when they collide. See Letter p.356

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Figure 1: Blue stragglers in the star cluster NGC 188.



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Correspondence to Christopher Tout.

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Tout, C. Stars acquire youth through duplicity. Nature 478, 331–332 (2011).

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